Home / 330,023.57-455,354.46-186,783.61

Finding the Fourth Proportional to 330,023.57, 455,354.46 and 186,783.61

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Solution

The fourth proportional to 330,023.57, 455,354.46 and 186,783.61 is: 257,717.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,023.57 : 455,354.46 = 186,783.61 : x
  2. Step 2: Convert to fraction form
    330,023.57/455,354.46 = 186,783.61/x
  3. Step 3: Cross multiply
    330,023.57x = 455,354.46 × 186,783.61
  4. Step 4: Simplify right side
    330,023.57x = 85,052,749,868.40
  5. Step 5: Solve for x
    x = 85,052,749,868.40/330,023.57
  6. Step 6: Final answer
    x = 257,717.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.